updating to newer version

Startcode/main.c

@@ -0,0 +1,90 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "numbers.h"
+#include "timer.h"
+#include "highscore.h"
+
+// Read an unsigned integer from stdin with prompt (retries until valid).
+int inputNumber(const char *promptText)
+{
+    unsigned int number;
+    int numberOfInputs = 0;
+
+    while(numberOfInputs != 1)
+    {
+        printf("%s", promptText);
+        numberOfInputs = scanf("%u", &number);
+        while(getchar() != '\n') {} // clear input buffer
+    }
+
+    return number;
+}
+
+// Print an array of numbers.
+void showNumbers(const unsigned int *numbers, unsigned int len)
+{
+    if(numbers != NULL)
+    {
+        printf("Numbers:");
+
+        for(int i = 0; i < len; i++)
+            printf(" %5d", numbers[i]);
+
+        printf("\n");
+    }
+}
+
+// Main game loop: generate numbers, ask user for duplicate, measure time, update highscores.
+int main(int argc, char *argv[])
+{
+    int exitCode = EXIT_FAILURE;
+
+    if(argc != 2)
+    {
+        fprintf(stderr, "Usage: %s <player name>\n", argv[0]);
+        exitCode = EXIT_FAILURE;
+    }
+    else
+    {
+        const char *highscorePath = "highscores.txt";
+        const char *playerName = argv[1];
+        unsigned int *numbers = NULL;
+        unsigned int duplicate = 0;
+        double measuredSeconds;
+        unsigned int userInput;
+        unsigned int numberOfElements = 0;
+
+        // ask until valid number of elements (3..1000)
+        while(numberOfElements < 3 || numberOfElements > 1000)
+            numberOfElements = inputNumber("Wie viele Zahlen sollen gezeigt werden: ");
+
+        // create numbers and show them
+        numbers = createNumbers(numberOfElements);
+        showNumbers(numbers, numberOfElements);
+
+        // measure time while user guesses the duplicate
+        startTimer();
+        userInput = inputNumber("Welche Zahl kommt doppelt vor: ");
+        measuredSeconds = stopTimer();
+
+        duplicate = getDuplicate(numbers, numberOfElements);
+
+        // check result and update highscores
+        if(userInput == duplicate)
+        {
+            int score = addHighscore(playerName, measuredSeconds, numberOfElements);
+            printf("Sie haben die korrekte Zahl in %.6lf Sekunde(n) gefunden und %u Punkte erzielt.\n", measuredSeconds, score);
+        }
+        else
+            printf("Leider ist %u nicht korrekt. Richtig waere %u gewesen.\n", userInput, duplicate);
+
+        loadHighscores(highscorePath);
+        showHighscores();
+        saveHighscores(highscorePath);
+        clearHighscores();
+
+        exitCode = EXIT_SUCCESS;
+    }
+
+    return exitCode;
+}